The Collaborative International Dictionary of English v.0.48:

Nectarine \Nec`tar*ine"\ (n[e^]k`t[~e]r*[=e]n"), n. [Cf. F.
   nectarine. See Nectar.] (Bot.)
   A smooth-skinned variety of peach.
   [1913 Webster]

   Spanish nectarine, the plumlike fruit of the West Indian
      tree Chrysobalanus Icaco; -- also called cocoa plum.
      It is made into a sweet conserve which is largely exported
      from Cuba.
      [1913 Webster]